Time-clock mechanism.



UNITED AT T NT QFFICE...

SIGNAL & RECORDING COMPANY,

ARIZONA.

.ALFRIElD LOUIS SOHM, or LOS Antennas, CALIFORNIA, assumes T sonicErasure-1c or SPOKANE, wasmneron, a CORPORATION 013 TIME-CLOCKMECHANISM.

Patented May 11, 1915.

Application filed September 13, '1910. Serial No. 581,793.

To all whom it may concern:

Be it known that I, ALFRED'L. SOHM, a citizen of the United States, andresident of Los Angeles, in the county of Los Angeles and State. ofCalifornia, have invented oer tain new and useful Improvements in TimeClock Mechanism, of which the following is a specification.

The object of my invention is to provide a time clock mechanism,electrically opera -ated in order to actuate part of the printingmechanism of a recorder, the necessary number of secondary devices beingconnected up in multiple, and controlled by a master clock.

I contemplate the provision of a device which is so connected up,operatively,, that it will by the intervention of suitable mech-.

anism, print on a record sheet the work hours, as well as the ed in asimple mannerand absolutely re- I liable in its operation.

In the drawings,"Figure'1 is a diagram matic View, of my system andapparatus. Fig. 2 is'a view of the late magnet employed showing the pawlin position when the winding'is energized by the current. Fig. 3illustrates diagrammatically other parts of the recording machme. Fig. l1s adlagrammatic representatlonof the master clock in recording machineand connection with one one secondary clock. Fig. 5 illustrates asection of the record taken on the recording machine at the close of thenoon hour, and Fig- 6 illustrates the same at thebeginning of themorning-work period;

In constructingmy invention '1 provide a master clock 3, on the face ofwhich is, two ofi.

mounted metallic contact points,

which, l, 5, are designed to beengaged by the minute hand 6, and thefour points, 7,8, 9, 10, to engage with the hour hand 11. The.

that the minute .hand

point 4 is so located contacts with it one minute before 12oc lock,= andthe other point 5, so that theminute off hours and also indi- 1 catelate arrivals, the whole bemgtonstruct ing machine and coil :ot theclock. Such more learly The dotted lines in Fig. 1 indicate the positionof this ,wheel. The recording, machine comprises,

among other parts to be referred to, a mag net 13, mounted on asuitablebase 14, this base havlng'at its projecting end a verticallydisposed L-shaped armature 15, hinged thereto at 16, the limb 17 ofwhichis engaged by a spring-.18 securedto the base 14, so as to normallythrow the armaturefout of contact with the core of the magnet.

The upper end of the armature 15 has hinged theretoa pawl bar 19, at theopposite end of which is a hinged pawl 20. This pawl cooperates with aratchet wheel.

mounted upon an arbor 22. vA type-wheel 23 is secured to the arbor 22,and. this wheel is provided with two characters 21, oppositely-disposed,as shown, It will be noted that the-wheel 21 has 8 teeth so that a clockcircuit of this character is designed for four hour shifts, or a workdayof eighthours, as will be understood presently.

T he eccentric wheel 12 has in engagement. therewlth one end of a springfinger 25,

adapted to ride. on the eccentric, and dis- .posed inu'e'lation to thefixed finger 26 so that the point 27 of the eccentric will cause the twofingers to contact with each other as.

,shown in Fig. 1.

i The circuit is to the fixed finger 26. The spring finger 25 has aconductor 30, which forms a common wire for one side of a series ofoperating magnets, 'each designed to have operative means to printcharacters or record the time. Thus, coil 31 may be located in therecordformedby a conductor 28, 'from the contacts 4, 5, through battery29,

32in the secondary clock at the employees entrance, and in-practice anynumber of clocks may be utilized .;in "the circuit formed bythe"conductor'30 and by the conductor 33 connected with the these coilsand. running to the other side. of the 'battery 2 9,all. as shown in thedrawings, so that' all'may be controlled other terminals of ()ne sideof' the battery is connected'up .with the coil 13 by a conductor and theother side of the coil 13 has a conductor which runs to themcontac'tpoints, 7, 8, 9, 10

each recording mach'ine.. as indicated.

ZIMCOlldS provided for A condensergfi is locatedbetweenth o i .ductorsl30. 34:, by wire 317, to preyent arcing at the spring-finger25,'and'a'fs1m1lar condenser 38 is connected up between conductors 33,3%, by wire 39, to prevent arcing between the clock hands and contactpoints.

It will now be understood that the elec tromaguet 13 with the associatedparts, and. the electromagnet 31, with its time printing wheels 10,'which it advances periodically, form part of the recording machine.This machine also comprises the printing elec tromagnets ll, 41 whichare controlled re spectively by the-switches a, b, 0, (Z, and c. nynumber of such switches ,may be employed and each workman-is assigned toa certain switch. Each magnet 41 operates an armature and associatedtype bar 42 so that the workman is enabled to print his number on arecord sheet by actuating his switch,

the current being derived from a battery The common wire 44 of thesemagnet circuits includes a solenoid winding 4E5 which operates a corecarrying a platen arranged to cooperate with the characters on the timeprinting wheels 40 and the properly dis-' posed characters on the wheel23 when the workman operates his switch. The characters on the wheel :23and those on the wheels 4:0 are arranged to come in thesame printingline, under this platen and the type 42 are arranged to strike up intothis line. The registration on the strip of paper will, for

example, be as follows: Late 26 8:14 an 1896.

If the registration is before 8 oclock for instance, the'word late ofcourse, will not appear.-

The secondary clock 4:6, which. is actuated. by the electromagnet 32 mayform partof J an.

the entrance plate containing the switches.

A diagrammatic assembly of the recording apparatus and a. secondaryclock is shown in Fig. 4 in connection with the master clock, aspreviously described. But one recording machine and secondary clock isillustrated, but it is obvious that any number of such de vices:.-;=llld be connected up in parallel. But one workmans switch a isshown in Fig. l as well as one electromagnet 4:1 controlled by saidswitch a. It is apparent that any number of similar switches and magnetscould be placed in the circuit. The printing platen 50 is showncontrolled by the solenoid 45 in the circuit controlled by switch a. Themanner in which the type strikes up into a line is also shown in Fig.4-, and Figs.

5 and 6 show sections of the printed record taken from the machine. Itis now seen that there is a late coil in each recording ma chine whichcoil is controlled by the master clock.

The operation is as follows :-The eccentric mounted on the second handof the clock, at every complete revolution, connects the impulsefingers, 25, 26, for one second, thereby sending an impulse to coils 31,The secondary clocks, for instance, which.

masses are placed in the circuit between the conduc tors, 30, 33,-willoperate in multiple 0E springs 52-5, 26, every minute. When the hourhand is at point l0, or eight oclock and the minute hand is at contact 4(one minute before 12) the late coil 13 becomes energized, therebypulling up armature 15 and thus moving .the ratchet 21 one tooth, which,of course, moves the type wheel 23 a corresponding. distance: When thehour hand is on the point 10 and the minute hand at contact 5, showingclock time to be one minute past eight, the late coil is again similarlyenergized and a like action takes place in the type wheel, so that theprinting apparatus prints a dash or other character to indicate latewith the time, day, etc. It will be noted, thus far, that all employeesentering before 8:01 m. have registered their time without any latecharacter showing upon the record sheet. When the hour hand points to11:59 a. in. and contacts with point 7, and the minute hand contactswith point l, the late coil is again energized pulling armature asbefore, thereby placing the second tooth of the ratchet at the printingpoint, so that no character will be printed. When the hour hand is atpoint 7 and the minute hand reaches contact point 5, the late coil isagain energized, so that the third tooth is now thrown up, which alsoresults in a blank in the printing apparatus. V fhen the hour handreaches point 8 and the minute hand touches point a another impulse isgiven to turn. the printing wheel another minute hand reaches point 5another eighth turn is given the printing wheel, thus again exposing oneof the characters 24 to the printing mechanism and all employeesontering after this time 1:01 p. in. will have the late characterprinted on the time'slip until the hour hand reaches the contact point 9and the minute hand reaches l which completes the working cycle.

it should. be observed that when the hour hand is at point 7 the minutehand will contact with. point 5 before the hour hand is released frompoint 7, thereby again energizing the late coil, but must still show ablank character on the printing wheel 23, showing that the charactermark shows only from the hours 6.01 to 11.59, and from 1.01 to 459, allother contacts showing blank upon the character Wheel 23. It will thusbe seen that the character wheel has two characters and six blanks foreach revolution, corresponding with the eight teeth of the operatingwheel.

It will be obvious that a number of recording machines, each including acoil 13, be controlled by a single master-clock.

What ll claim as new,-is:

1. line system of the class described, the

ctmbination of a master clock, a. recording apparatus, said masterclockhaving-a plural ity of contact points on its dial for its hourhand, contact points upon ,its dial for its minute hand, electricalconnection between said contact points and an electromagnet in saidrecording apparatus, and an armature for said electromagnet adapted tocontrol the movement of a character wheel so as to bring said wheel intooperative position for registering certain characters during certainperiods of time. I

2. In a system of the class described, a master clock, a plurality ofrecording machines, and a plurality of secondary clocks, each of saidrecording machines having an electromagnet, the armature of which iscontrolled by said 1naster-clock and adapted to change the position of acharacter wheel immediately before and after certain hours of the day soas to bring said wheel into or out of position for printing certaincharacters, and common means for actuating said recording machines andsecondary clocks.

In a device of the character described, a printing wheel havingcharacters thereon n opposite sides and adapted to print twice duringeach revolution, a ratchet wheel attached thereto having eight teeth, amagnet coiLwith an armature operatively connected with said ratchetwheel, a master clock having contact points for the minute hand at thedial figure 12, and contact points for the hour hand at the dial figures12, 1, 5 and 8, circuits connecting up said. magnet coil and contactpoints whereby the armature will operate to expose the late character ofthe printing wheel between the hours of eight and twelve and one andfive.

t. In a device of the class described, the

combination with time and number printing wheels adapted upon actuationto print a number and the time in a certain printing line, of a printingwheel having tardy characters thereon, a ratchet Wheel attached thereto,a magnet coil with an armature operatively connected with said ratchetWheel, a. master clock having contact points for the minute handdistributed at certain points, circuits connecting up said magnet coiland contact points so that the armature will operate to maintain thetardy characters of the printing wheel in the printing line betweencertain hours of the day.

5. In a device of the class described, the combination with time andnumber printing wheels adapted upon actuation to print a number and timein a certain printing line, of a printing wheel having specialcharacters thereon, a ratchet wheel attached thereto, a magnet coil withan armature operatively connected with said ratchet wheel, a masterclock having contact points for the minute hand distributed at certainpoints, circuits connecting up said magnet coil and contact points sothat the armature will operate to change the position of said printingwheel immediately before and after certain hours of the day to maintainthe special characteristics in the printing line between certain hoursoi the day.

Signed at Los Angeles, in the county of Los Angelesand State ofCalifornia, this 6th day of April, A. D. 1910.

ALFRED LOUIS SOHM.

Witnesses:

F. \V. HEART, J. S. Znunn.

